Ok i’ve got an answer for the 11 characters only!!!
I’ve created a test event, and at this time there was 11 characters in the database, then I added 5 more. But they weren’t visible in the raid, so i deleted the raid and create an other and they are now visible!
15MtA5fPyKWn3c7J9NSSisSNZL3Qaz7ayU
